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用的浏览器是chrome 50,其实firefox上也测试过了.先看代码
1 2 3
问题的奇葩在于,打印出来的ev对象,可以看到currentTarget的值是null,但是直接访问的话,却发现他其实是由值的,这是为啥呢?
null
学习是最好的投资！
http://stackoverflow.com/questions/26496176/when-loggin-an-event-object-currenttarget-is-null-but-when-logging-event-curre
看看
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
http://stackoverflow.com/questions/26496176/when-loggin-an-event-object-currenttarget-is-null-but-when-logging-event-curre
看看